Movable weir



June 25, 1935- H. ZIMMERMANN.

MOVABLE WEIR Filed Feb. 10, 1932 4 Sheets-Sheet l I IN V EN TOR.'

:7[. Zz'mmmafia M/Z ATTORNEYS.

June 1935- H. ZIMMERMANN 2, 0

MOVABLE WE IR Fil ed Feb. 10, 1952 4 Sheets-Sheet 2 IN V EN TOR.

35 Z 2 mermamz A TTORNEYS.

June 25, 1935. v ZIMMERMANN 2,006,252

MOVABLE WE I R Filed Feb. 10, 1932 4 Sheets-Sheet 5 INVENTOR: H. Zimmerm n??? l 477% wm,

A TTORNEYS.

June 1935 H. ZIMMERMANN 2,006,252

MOVABLE WE IR Filed Feb. 10, 1932 4 Sheets-Sheet 4 Patented June 25, 1935 I MOVABLE want Hans Zimmermann," Dortmund: Germany, assignor to the firm Vereinigte Stahlwerke Aktiengesellschaift,Dusseldorf, Germany Application many, 10, 1932,. Serial No. 592,103

In ma Jmuarr 2 11 1 U This invention relatesto movable weirs'ofthe Stoney roller type and more especially to-an'improved supporting structure of the ,sameboth in static and hydraulic respects. r 1

Instead of the hitherto used quadrangular cross-section of the weir body with four'supporting girders acontinuous triangular cross-section with three supporting girders is used according to the invention. The one side-of this triangle is i in the form of a weir wall whichxis substantially-vertical, while the two .main girdersiorm' the other sides of the triangle. The main girders have a common longitudinally disposed-supporting and connecting beam or flange at theirjoint and separate beams in the form of flanged sec,- tions atthe weir wall, the common beam acting for example as a tension beam-when-arranged at the tail water side of the weir body ,while;the separate beams act as compression beams or .flanges. Thereby the favorable ,mechanical properties of a three beam system are utilized for the weir construction and its resistance against bending and torsional stresses. Further.- more a better water conduct is thereby obtained because theinclined upper girder forms anatural fall so that solid bodies, such as drift-ice orthe like, passing together with the water "over the weir will not damage it. Finally the'jet of water-passing under the weir'when thelatterris raised will not strike the lower rna'in girder or .the common beam of the girders so that oscillations oi the weir bodyand damages will not I Y invention further relates to animproved construction'of the top. and bottom edges .of the triangular weir body in order to avoid separations of .the water jet .from these "edgesLarid-Qtherby oscillations. of the weir body! According ,tothe invention the top and bottom edges of the weir wall are inclinedat a definite angle so that they do not meet sharply or they are froundefd 'o'if. In order to reduce the expenses of manufacture ithe inclined portions .are preferably arranged parallel to the beams of the main-girders so that thisbeam can be construc'tednormally and'fa better securing of the weir walledgestothe'bearn by rivets or like may be obtained. 1 Another object of the 'nventionf's an improved connection of the weir body to the wheel supports atthe ends of the same. According to the invention the triangular weir body issconnec'ted iinitsiull horizontal breadth to .theflend plates supporting the -bogie wagons Without increasing -the aile:base of the wheels -.or the breadth of the pierrecesses. With sirchflabonnebtidnthe weir doocbwgets aggreaterresistance against torsional ,stresses-especially :at .its ends, because the weir .bodyiisnotreduced in widthat the endsasin the hitherto used'constructions- The novel connecrtion is :most' advantageous .for sluice weirs with 1 large-distance of supports. The invention isiillustrated in the accompany- ;ing drawings, in which:- a v j j Fig. l'is a cross sectionof thetriangularwei-r -.b d a la .isaplan view according to Fig.1, e Y ig. .2 is a across-section of the weir body ofga submersible sluice weir, 7

Fig. 3 is a cross-section of the weir body with adamming gate, 1 v Fig. 3a is aplan view according to -Fig.,3, g j

Fig. 4 is a cross-section with a dammin'g -or sluice gate and improved stream line with .crankededges of the weir wall, H isa cross-section of the n ovel construction -of -theiconnection of a triangular weir body with inclined-edges to the end plates through line er n i i Fig. :6 isalplan of the novel weir body according to Fig. 5 gshowing, the connection withthe end plates, M

1 Fig. 7,-is a;cross-sectionthroughthe novel weir body through line of Fig. 6. i v Fig, l-tshows a :sluice weir which rests lin'the .damminglpositionon the weir base and can be raised in order to open thepassage forthe water under the weir. in this figure I dsthe weirlwall, 2 the bottom girder and 3 the top main; girder ota slnice weir according totheinvention. "Axlesig-nates the glongitudinal supporting beam iorrrrafeompression flange for the weir .on the head water side, 15 'a similar beam aim the upper main girder; 5' :is the common beam forming. a ten- ;sion flange for ,the two main girders on the tail waterside I,

;4 0 ;Fig. .2 lshowsia sluice weir which may :be isunk rintoca recess-23 lot the weir base, in apartly sunk :position. :Owing-tothe ypartial lowering offthe weirIthe water :passesraver the upper .edge1of the weir and the covering l5 of the top main-girder into the tai l water; 24 is the tet of rthe'ioverflowingwater. a n I v Ffig.' 3'=shbw's a*-sl1iiee'-weir which-atthe top is "providedwi tha pivdtal'ly mounted weir flap '-l 6 for the conducting or water over the'weir inihe d minjg position rests -upon the weirf base and jwliiclr'may be -raised by. means of chains, ropes or'thel'ike. l'l'hejfigureishows theweirwith jloweiiedhap and partly raised weir body so that w we;

the water flows into the tail water both over the flap and under the weir body.

In a weir according to Fig. 1 where water is flowing (over the weir only after having stepped over the damming height, the advantage of using the three beam girder consists substantially in the great rigidityof the system towards oscillations and in thehigh resistance of the system against the hydrodynamic forces'of the Jet of water passing under the weir when the same is raised, and of the tail water. The superiority of the three beam system according to Fig;";1 over the hitherto used four beam or girder system rests in static respects mainly'on the fact-that the three beam girder the comp'ressionbeams" '4- lie at a distance from each other which is approximately the same as the totalheight of the weir wall. They therefore increasethe amount of inertia of the weir wall which is of decisive importance to the resistance of the system to perpendicular oscillations, much more effectively than'the compression beams ofthefourbeam system which lie at a smaller dist'ance distanc'e of the-main girders of the known construcof the water jet' passing under the weir and of the movedtail water, it also reduces toa minimum the attack of such forces upon the weir system. If'the cr'oss-section' of theweir jis quadrangular, the lower maingirder'is, when the weir body is partly raised, struck by thewater jet which behind the base beam of the'weir diverges also towards the'top and, in addition thereto, the

tension beam of that main girder is affected by the whirl ring formed in the tail water (of. in

7 this respect-the illustrationof the water jet and of the whirl ring in Fig. 3); These rhythmically acting forces produce oscillations in the'weir body which may become dangerous the co-efllclent i 'weir body with inclined edges to the end plates supporting the bogie wagons. In these figures 32 with the rhythm of these forces; r

If the cross-section is, however; triangular such as appears from Figs: 1,- 2' and -3*the' waterjet of natural-oscillation of the weir body coincides passing under theweir no 'longerstrikes the bottom maingirder' 2,1 and- 2" owing to the declination of that girder and the tension beam is also'withdrawn from the influence ofthe whirl ring. The invention thus removes for' all prac tical. purposes the cause ofthe well knownoscilindifferencesof the supportingsystem to such in- These advantages are, of course, also-retained if the three beam system is used forrweirs that may be sunk s ch? as fo in t n e-a i hqwa in Fig.2, and for-weirsaccording to Fig, .3 provided withaweirflapr j: f

Inthe case of sinkableweirsthereis the further advantage that the covering 'neces aryyw protect the supporting structure and over which the j-overflow water is discharged intofth [tail water, is arranged'directly'on the top maing'irder 3' or .damming height.

that the latter itself may be'constructed as a water conducting surface. A separate supporting structure such as is necessary in the known construction is thereby made superfluous.

The use of the invention is, as appears, for instance, from Fig. 3, of very particular advantage forweirs with a top flap arrangement. In such weirs the height of the weir'wall I is by the overall height of the raised flap lower than the In consequence the increase of their moment of inertia by the widely spread compression beams of the main girders is particularly valuable. The favorable static effects of the invention are therefore particularly marked in this case of application, the favorable conditionsin hydrodynamic respects are fully retained and in addition an ample free space for the exterior support of flap I6 (pipe, flat beam or the like) is produced by the strong declivity of the top main girder 8" towards the tail water. This free'space may therefore be dimensioned without the otherwise necessary limitation by the supporting structure of the weir body. In addi'- tion drifts of ice and other solid bodies which slide overthe flap in such position in which the flap does not fully cover the weir structure, or in the case when a flap is used which covers only apart of the weir width, slide'on the: inclined main girder into the tail water without doing fbeam adjacent the bottom inclined edge of the weir'wall, '21 the top and 26 the bottom main girder of the three beam system; the beams 29, 22 and 28', 2| respectively, on the head waterside, of these main girders which, for exampleg 'are shown as angle irons, are rectangularly connected to the inclined weir wall edges l1 and I8 respectively and to the main girders as the latter form with the weirwall edges II and I8 an angle Figs. 5 to7 show the connection of a triangular is'thetop and 3| the bottom main girder with the separatelhead water beams 34 and .3 3fresp. and the common" tail water beam'35, '30 is the weir wall, 8 the end plate or wheel Su port which rests with the movable bearings 9 and ill on the bogie wagons or supporting wheels ll' and l2, and I3 is the pier with its recess 14 inwhich the weir can be'moved up and down. lation phenomenaeof wei'rs with two-main girders and atthe'same time considerably. increases the of the end plate 8 and is connected with the same. Towards the tail water the 'end plate 8 is provided with a somewhat triangularly shaped extension for the connection of thebeanfwhich may also be constructed as carrier for thebogie wagons II, I? which in a'favorable position may be arranged above and beneath the beam with jout an extension of thelengthof endfiplate 8 or a widening of the recess I14 being-necessary.

The' construction of thejweir body which isfmos't favorable in static respects and in respect 'to 'the avoidance of weir oscillations, thus is accompanied with the lowest expenditure of weir body and pier building material and nevertheless disadtvlantages in other respects need not be put up wi What I claim and desire to secure by Letters Patent of the United States is:

1. A moveable weir of the Stoney roller type comprising a weir body consisting substantially of two main girders and a weir wall and having a continuous triangular cross section, the said main girders and the weir wall representing the sides of the triangle, said body also including two beams for the main girders located adjacent the upper and lower edges of the weir wall and a common beam for connecting the main girders, said beams forming the edges of the triangle.

2. Moveable weir of the Stoney roller type including a weir body consisting substantially of two main girders and a weir wall and having a continuous triangular cross section, the top main girder including means acting as a spillway for the overflow water.

3. Moveable weir of the Stoney roller type including a weir body consisting substantially of two main girders and a weir wall and having a continuous triangular cross section, the top and bottom edges of the perpendicular weir wall being inclined towards the tail water side of the weir in a straight line so that the level of the said inclined edges come to lie vertically on the level of the adjoining main girders of the weir.

4. Moveable weir of the Stoney roller type the body of which has a continuous triangular cross section and consists of a perpendicular weir wall, two convergent main girders which are connected with the weir wall adjacent the upper and lower edges thereof, two separate beams at the connection of the main girders with the weir wall, one common beam at the intersectionof the convergent main girders, the said common beam passing in a straight line from end to end of the weir body parallel to the weir wall so that the weir body maintains the horizontal width of its cross section over its entire length, plates at the ends of the weir body and connected with the beams, and bogie wagons connected with the end plates for supporting the weir body, the said bogie wagons being arranged close below and above the connecting point of the said common beam and the end plate. I

5. Moveable weir of the Stoney roller type the body of which has a continuous triangular cross section and consists of a perpendicular weir wall, two convergent main girders which are connected with the weir wall adjacent the upper and lower edges thereof, a covering on the top main girder and acting as a spillway for the overflow water, two separate beams at the connection of the main girders with the weir wall, one common beam at the intersection of the convergent main girders, the said common beam passing in a straight line fromend to end of the weir body parallel to the weir wall so that the weir body maintains the horizontal width of its cross section over its entire length, plates at the ends of the weir body and connected with the beams, and bogie wagons connected with the end plates for supporting the weir body, the said bogie wagons being arranged close below and above the connecting point of the said common beam and the end plates.

6. Moveable weir of the Stoney roller type the body of which has a continuous triangular cross section and consists of a perpendicular weir wall having inclined upper and lower edges, two convergent main girders which are connected with the inclined upper and lower edges of the weir wall so that their longitudinal axes lieperpendicular to the inclined upper and lower edges of the weir wall, two separate beams at the connection of the main girders with the weir wall, one common beam at the intersection of the convergent main girders, the said common beam passing in a straight line from end to end of the weir body parallel to the weir wall so that the weir body maintains the horizontal Width ofits cross section over its entire length, plates at the ends of the weir body and connected with the beams, and bogie wagons connected with the end plates for supporting the weir body, the said wagons being arranged close below and above the connecting point of the said common beam and the end plates.

HANS ZIMMERMANN. 

